Improvement in attachments to automatic dental pluggers



Patented May/18,1875.

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Em@ www THE GRAPHIC C0.PHOT0LITH. 398:41 PARK PLACEJLY.

Uivrrnn STATES PATENT OFFICE.

LOUIS DUVINAGE, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN ATTACHMENTS TO AUTOMATIC DENTAL PLUGGERS.

Specification forming part of Letters Patent N0. 163,306, dated May 18, 1875; application led March 16, 1875.

To all whom t may concern:

Beit known that I, LoUIs DUVINAGE, of the city and county of Philadelphia, Pennsyl- Vania, have invented a new and Improved Dentists Automatic Plugger; andlherebydeclare the following to be a full, clear, and eX- act description of the same, reference being had to the accompanying drawing and to the letters of reference marked thereon.

My invention consists in the provision of a gold-leaf feeding-tube as an attachment to automatic pluggers, and in the arrangement ot a vibrating bar, and the mechanism for vibrating the same combined therewith, as hereinafter described.

The object of the invention is to make an efficient instrument for the automatic plugging of teeth.

In order to enable others to use and practice my invention I will proceed to describe its construction and operation.

On reference to the accompanying drawings, which form part of the specification, Figure 1 represents a longitudinal section through the center ofthe instrument; and Figs. 2, 3, 4, 5, and 6 represent sectional parts of the same.

Similar letters refer to similar parts, of which a, Fig. l, is casing or tube, formed tapering at its lower end g, through which the plugging-barf is made to reciprocate. Said plugging-bar is shown in Fig.3, and consists ofthe bar f screwed into the cylinder It, and has screwed in its upper end a nut, u, having a lug of a cam shape, n, for the rotating cam e ou rod b to play against, and has a journal, m, for supporting the rotating cam-rod, and is provided with a nipple, o, tha-t reciprocates in slot shown in Fig. l, which permits a reciprocating and prevents a rotary motion of said plugging-bar. rIhe plugging-bar, Fig. 3, is inserted in the top of case a, together with the cam-rod b and spring d, and are secured in place by nut t and collar lo. The cam-rod b has its cam e, which is of a triangle shape,

,with its base at right angles to the line of direction of the casing of the tube, as shown in Fig. 2, and occupies about one-third of the circumference, as shown in Fig. 6. The upper end of said cam-rod is bored for the reception of couplings or mandrels to connect the saine with the various dental engines, &c., for rotating the same.

Fig. 4 represents a transverse section of the gold-leaf' feeder, which consists of a tube, p, slotted on one side, and a covering, s, for closing said slot, the covering being slidl over and secured tightly in place. By reason of its tapering form the feeder is held in position on the instrumentby the spring-clamp r.

When operating this instrument the cambar b is connected with one of the ordinary dental engines, which causes said rod to rotate, and on each revolution the cam c, playing upon the lug n, lifts the plugging-bar f, and when the cam e passes the lug a the spring d forces the bar quickly downward, which operation is repeated every revolution, causing a pounding action of the bar f. A piece of gum, i, prevents any severe shock to the instrument when the blow is not received on the tooth. The cam e permits a rotation of either backward or forward with a like result.

The vibrating bar is prevented from pounding while the cam-rod is rotating by placing the finger upon and holding back the nipple o.

Gold-leaf is placed in the groove of tube p in narrow strips or rolls, the slot permiting its proper location by the insertion of a pointed instrument.V The leaf is thus fed to the point of bar f in a thread-like character,

and the repeated blows of bar f draws down and feeds to itself the necessary gold -leaf Without the risk of handling the leaf by hand, which damages it for Welding.

The tension of the spring d can be regulated by adjusting the nut t. The covering s can be slid over or hinged to the tub'ep, as most desired.

What I claim, ters Patent, is

and desire to secure by Letl. The tube p, in combination with the vibrating' bar f, for feeding gold-leaf, substantially as and for the purpose set forth.

2. The vibrating bar j', in combination with casing g, cam c, spring d, and tube p, as described.

WM. GARwooD, F. MUMBAUR. 

